The mass of a sulfur atom is 32.0 u, and the mass of a fluorine atom is 19.0 u. What is the mass of a mole of sulfur hexafluoride (UF6)?
a. 41.0 g
b. 20.5 g
c. 106 g
d. 146 g
e. 211 g
D
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The heat of fusion for gold at 1,063
is 66.6 kJ/kg and the specific heat of gold is 0.128 kJ/kg 
What is the energy needed to melt 100 grams of gold starting at 0
A. 20.3 kJ B. 17.8 kJ C. 12.3 kJ D. 9.50 kJ E. 7.50 kJ
Photon Energy: Gamma rays are photons with very high energy. How many visible-light photons with a wavelength of 500 nm would you need to equal the energy of a gamma-ray photon with energy 4.1 × 10-13 J?
A. 1.0 × 106 B. 1.4 × 108 C. 6.2 × 109 D. 3.9 × 103
If a cord has negligible mass, the force exerted at one end is transmitted undiminished to each adjacent piece of cord along the entire length to the other end
Indicate whether the statement is true or false
A series LC circuit in a radio is in resonance with AM 1200 kHz. If the radio station is changed to AM 600 kHz, by what factor must the capacitance be multiplied to again achieve resonance?
a. 4 c. 1/2 b. 2 d. 1/4